I’m working in Visual Studio 2008 but I believe the same problem occurs in 2005.
When working with .cpp files, the Navigation Bar is located at the top of the editing window. The navigation bar lists all of the functions in the specified scope.
I know this can be enabled/disabled for standard extensions through Tools > Options > Text Editor > C/C++ > Display Navigation bar.
I have mapped the cu extension to Microsoft Visual C++ and added *.cu to the “C/C++ File Extensions” list in the Tools > Options > Projects and Solutions > VC++ Project Settings tab but I am unable to get the navigation bar to show up for .cu files.
Does anyone have any other ideas?